Nissan Armada 2025-2026 Service and Repair Manual: Diagnosis and Repair Work Flow

Work Flow

DETAILED FLOW

INTERVIEW FROM THE CUSTOMER

CAUTION:

Customers are not professional. Never guess easily like “maybe the customer means that...,” or “ maybe the customer mentions this symptom”.

>>

GO TO 2.

CHECK SYMPTOM

Reproduce the symptom that is indicated by the customer, based on the information from the customer obtained by interview. Also check that the symptom is not caused by fail-safe mode. Refer to Fail-Safe.

CAUTION:

When the symptom is caused by normal operation, fully inspect each portion and obtain the understanding of customer that the symptom is not caused by a malfunction.

>>

GO TO 3.

PERFORM THE SELF-DIAGNOSIS

With CONSULT

1. Ignition switch OFF (Auto ACC function OFF) to ON.

2. Perform self-diagnosis for “ABS”.

Is DTC detected?

YES>>

Record or print self-diagnosis results and freeze frame data (FFD). GO TO 4.

NO>>

GO TO 6.

RECHECK THE SYMPTOM

With CONSULT

1. Erase self-diagnostic results for “ABS”.

2. Ignition switch OFF (Auto ACC function OFF) → ON → OFF (Auto ACC function OFF).

3. Perform DTC confirmation procedures for the error-detected system.

   NOTE:

   If some DTCs are detected at the same time, determine the order for performing the diagnosis based on DTC Inspection Priority Chart.

Is DTC detected?

YES>>

GO TO 5.

NO>>

Check harness and connectors based on the information obtained by interview. Refer to Intermittent Incident.

REPAIR OR REPLACE ERROR-DETECTED PART

With CONSULT

1. Disconnect 12V battery negative terminal.

2. Repair or replace error-detected parts.

3. Reconnect part or connector after repairing or replacing.

4. Connect 12V battery negative terminal.

5. When DTC is detected, erase self-diagnostic result for “ABS”.

   CAUTION:

   Ignition switch OFF (Auto ACC function OFF) → ON → OFF (Auto ACC function OFF) after erase self-diagnosis result.

>>

GO TO 7.

IDENTIFY ERROR-DETECTED SYSTEM BY SYMPTOM DIAGNOSIS

Estimate error-detected system based on symptom diagnosis and perform inspection.

Can the error-detected system be identified?

YES>>

GO TO 7.

NO>>

Check harness and connectors based on the information obtained by interview. Refer to Intermittent Incident.

FINAL CHECK

With CONSULT

1. Check the reference value for “ABS”.

2. Recheck the symptom and check that the symptom is not reproduced on the same conditions.

Is the symptom reproduced?

YES>>

GO TO 3.

NO>>

INSPECTION END

Diagnostic Work Sheet

DESCRIPTION

• In some cases, multiple conditions that appear simultaneously may cause a DTC to be detected.

INTERVIEW SHEET SAMPLE

Interview sheet
Customer name	MR/MS	Registration number		Initial year registration
		vehicle type		VIN
Storage date		Engine / Traction motor		Mileage	km (Mile)
Symptom		□ Does not operate (			) function
		□ Warning lamp turns ON. □□□□□□□□□ □ Other (			)
		□ Noise (Location:  )   □ Vibration (Location:  )
		□ Other (			)
First occurrence		□ Recently □ Other (			)
Frequency of occurrence		□ Always □  Under a certain conditions of □ Sometimes (  time(s)/day)
Climate conditions		□ Irrelevant
	Weather	□ Fine □ Cloud □ Rain □Snow □ Others (			)
	Temperature	□ Hot □Warm □ Cool □ Cold □ Temperature [Approx.			°C (°F)]
	Relative humidity	□ High □ Moderate □ Low
Road conditions		□ Ordinary road □ Highway □ Mountainous road (uphill or downhill) □ Rough road
Operating condition, etc.		□ Irrelevant □ When engine/traction motor starts □ During idling □ During driving □ During acceleration □ At constant speed driving □ During deceleration □ Immediately before stop [vehicle speed: Approx. km/h (MPH)] □ During cornering (right curve or left curve) □ When steering wheel is steered (to right or to left)
Other conditions	VDC setting	□ On □ Off
	Use of other functions (ex. ICC)	□ Yes □ No (			)
	Presence of non-genuine parts installation	□ Yes □ No (			)
Memo